Predicted to enable transcription coregulator activity. Acts upstream of or within stem cell population maintenance. Predicted to be located in nucleoplasm. Predicted to be part of mediator complex. Is expressed in several structures, including branchial arch; central nervous system; facial prominence; limb; and limb bud. Human ortholog(s) of this gene implicated in schizophrenia. Orthologous to human MED15 (mediator complex subunit 15). [provided by Alliance of Genome Resources, Apr 2022]